Gen 5 Racing Tech Heads, cam, valvetrain, short block discussion

Displacement on Demand?

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Old Jul 18, 2008 | 11:49 PM
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Default Displacement on Demand?

WAY TO GO GM!!!

this is the worst news I've heard all year, anyone with a V8 Grand Prix knows FULL well what I am talking about... Hope you guys like bolt-ons only and running nitrous with crappy tunes...

because D.O.D. engines are terrible when it comes to modding, why do you think the s/c V6 grand prixs are STILL handing it to the "much powerful" 5.3L V8s, because out of the box they are faster, but that 5.3L is never going to see 300whp(without nitrous)
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Old Jul 18, 2008 | 11:52 PM
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Most people don't mod new cars anyways. Most people don't mod cars at all.
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Old Jul 18, 2008 | 11:54 PM
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then buy a ******* accord
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Old Jul 18, 2008 | 11:55 PM
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it going to suck *** to be getting our asses embarrassed by GT mustangs for years to come, because I am telling you, this crap has no place in a sports car, it takes away modding, how bad would LS1s suck if you had to keep them stock? you'll have headers, a catback, and a CAI.... there is your mod list
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Old Jul 19, 2008 | 12:07 AM
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I believe only the automatic V8 will have DoD!! The manual will not!!
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Old Jul 19, 2008 | 12:12 AM
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if that is true, than disregard this, as I will go out of bitchin mode, lol...

and will be buying a 6-speed


because normally I keep my mouth shut(21 post in 3 years) but being a former W-body owner and being active in several mod days, I've seen first hand the frustration that is displacement on demand, great for your Tahoe, NOT for a sports car or ANY car that you want to be modded...

I know w-bodies weren't "designed" to be modded but they actually have a VERY LARGE aftermarket
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Old Jul 19, 2008 | 12:16 AM
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Originally Posted by Ls1sEatRice
it going to suck *** to be getting our asses embarrassed by GT mustangs for years to come, because I am telling you, this crap has no place in a sports car, it takes away modding, how bad would LS1s suck if you had to keep them stock? you'll have headers, a catback, and a CAI.... there is your mod list
the 6speed manual has NO DOD. exact same as how the 6speed manual challenger RT's will not have DOD but the autos will. so theres that arguement out the window.
mopar overcomes the DOD obstacle by offering upgraded valvetrain for cam upgrades and a tune to eliminate dod


stock LS1's dont suck at all. for an 11 year old engine it still beats the living crap out of most "modern" engines in power and economy.
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Old Jul 19, 2008 | 12:23 AM
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I didn't say they do, but they are very mod friendly..

this is all water under the bridge now, let the guys with autos sort it out anyway, just glad to know we aren't having it forced on us...
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Old Jul 19, 2008 | 12:25 AM
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DoD is ONLY for AUTOMATICS. Plus, put a cam in it and unplug the DoD harness. Oh look. It's gone. But I trust most of you will be buying the 6-speed.
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Old Jul 19, 2008 | 02:28 AM
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I think you need to study up on DOD. there are cams for it, and you can cam it and get rid of it, your choice. Neither is a big deal.
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Old Jul 19, 2008 | 08:39 AM
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my god, so many bitchers and WHINERS!!!!

GM would be retarded NOT to put DOD in the auto. better mpg and no decreased driveability? I'm sure nobody would want that


like has been said, it is NOT hard to disable. most guys that mod don't mind disabling it and throwing in a different cam should be simple just like a GenIII/IV so whats the big deal anyway?
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Old Jul 19, 2008 | 04:11 PM
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Originally Posted by Ls1sEatRice
WAY TO GO GM!!!

this is the worst news I've heard all year, anyone with a V8 Grand Prix knows FULL well what I am talking about... Hope you guys like bolt-ons only and running nitrous with crappy tunes...

because D.O.D. engines are terrible when it comes to modding, why do you think the s/c V6 grand prixs are STILL handing it to the "much powerful" 5.3L V8s, because out of the box they are faster, but that 5.3L is never going to see 300whp(without nitrous)
I know right! Will the exhaust sound ricey when its in 4 cyl mode?
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Old Jul 19, 2008 | 04:17 PM
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Originally Posted by 0000000000
I know right! Will the exhaust sound ricey when its in 4 cyl mode?
Yes, it will. Just ask the G8 guys with exhausts.

On the G8 it can be killed with a tune. It will probably be the same on the Camaro.
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Old Jul 19, 2008 | 04:27 PM
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You need to look at this if you think DOD engines are not going to put out the power. Mast motorsports has made some good power with them. With the displacement on demand comes VVT if I am reading correctly.

https://ls1tech.com/forums/generation-iv-internal-engine/944422-mast-motorsports-marine-vvt-engine-testing-video-dyno-data-inside.html
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Old Jul 19, 2008 | 04:33 PM
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do you honestly think there'll be no way around it? I mean really, people were freaking out when OBD2 came out, but now look at what anyone can modify?
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Old Jul 19, 2008 | 05:38 PM
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Originally Posted by enginjoe
You need to look at this if you think DOD engines are not going to put out the power. Mast motorsports has made some good power with them. With the displacement on demand comes VVT if I am reading correctly.

https://ls1tech.com/forums/showthread.php?t=944422

no, AFM and VVT are two seperate things.

Mast is doing motors with VVT, NOT Afm.
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Old Jul 20, 2008 | 03:10 AM
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My bad. I seem to remember that GMHTP did an article that talked about what Mast was doing with DoD motors. I'll have to search a bit.
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